gfx/layers/apz/util/ActiveElementManager.h@129ffea94266
gfx/layers/apz/util/ActiveElementManager.h
Sat, 03 Jan 2015 20:18:00 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Sat, 03 Jan 2015 20:18:00 +0100
- branch
- TOR_BUG_3246
- changeset 7
- 129ffea94266
- permissions
- -rw-r--r--
Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.
1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
2 /* This Source Code Form is subject to the terms of the Mozilla Public
3 * License, v. 2.0. If a copy of the MPL was not distributed with this
4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
6 #ifndef mozilla_layers_ActiveElementManager_h
7 #define mozilla_layers_ActiveElementManager_h
9 #include "nsCOMPtr.h"
10 #include "nsISupportsImpl.h"
12 class inIDOMUtils;
13 class nsIDOMEventTarget;
14 class nsIDOMElement;
15 class CancelableTask;
17 namespace mozilla {
18 namespace layers {
20 /**
21 * Manages setting and clearing the ':active' CSS pseudostate in the presence
22 * of touch input.
23 */
24 class ActiveElementManager {
25 public:
26 NS_INLINE_DECL_REFCOUNTING(ActiveElementManager)
28 ActiveElementManager();
29 ~ActiveElementManager();
31 /**
32 * Specify the target of a touch. Typically this should be called right
33 * before HandleTouchStart(), but we give callers the flexibility to specify
34 * the target later if they don't know it at the time they call
35 * HandleTouchStart().
36 * |aTarget| may be nullptr.
37 */
38 void SetTargetElement(nsIDOMEventTarget* aTarget);
39 /**
40 * Handle a touch-start event.
41 * @param aCanBePan whether the touch can be a pan
42 */
43 void HandleTouchStart(bool aCanBePan);
44 /**
45 * Handle the start of panning.
46 */
47 void HandlePanStart();
48 /**
49 * Handle a touch-end or touch-cancel event.
50 * @param aWasClick whether the touch was a click
51 */
52 void HandleTouchEnd(bool aWasClick);
53 private:
54 nsCOMPtr<inIDOMUtils> mDomUtils;
55 /**
56 * The target of the first touch point in the current touch block.
57 */
58 nsCOMPtr<nsIDOMElement> mTarget;
59 /**
60 * Whether the current touch block can be a pan. Set in HandleTouchStart().
61 */
62 bool mCanBePan;
63 /**
64 * Whether mCanBePan has been set for the current touch block.
65 * We need to keep track of this to allow HandleTouchStart() and
66 * SetTargetElement() to be called in either order.
67 */
68 bool mCanBePanSet;
69 /**
70 * A task for calling SetActive() after a timeout.
71 */
72 CancelableTask* mSetActiveTask;
74 // Helpers
75 void TriggerElementActivation();
76 void SetActive(nsIDOMElement* aTarget);
77 void ResetActive();
78 void SetActiveTask(nsIDOMElement* aTarget);
79 void CancelTask();
80 };
82 }
83 }
85 #endif /* mozilla_layers_ActiveElementManager_h */
